Patent US3545218A successfully refreshed from Google Patents.
US3545218A
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Thermostatic control for air conditioning system
Assignee: GERALD B GREENBERG
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Filing: 1968-09-20
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Granted: 1970-12-08
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Expires: 1988-09-20
Abstract
No abstract record available.
Inventors
- 👤 Gerald B Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:23
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/50; F24F11/61; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F24F11/86; F24F11/88; F24F11/30; F24F2110/00; F24F2110/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |